You mess with the calf, you get the herd. It's estimated that around 4,500 bison roam around Yellowstone National Park.

The day after two hikers were mauled by a grizzly in Yellowstone, tourists yelled at rangers who were warning them to ...

Yellowstone National Park visitors recently had a front row seat to watch a pack of wolves hunting a herd of bison, leaving ...

Add Yahoo as a preferred source to see more of our stories on Google. Nature can be very dramatic. In the animal kingdom, life-and-death scenarios are always just around the corner. Even just a casual ...

The roars of a grizzly echoed from a riverbank in Yellowstone National Park on Sunday, as it postured with a wolf over a ...

Visitors in Yellowstone National Park witnessed a rare and tense encounter as a grizzly bear and wolf vied for a bison carcass along the Yellowstone River. Though the animals came close, they avoided ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: NPS/Doug Smith On ...

A guide has captured dramatic footage showing two adult bison rushing to the rescue as wolves attacked a young calf in Yellowstone National Park. Michael Sypniewski, who guides for Yellowstone Wolf ...

A Yellowstone guide and wolf tracker captured the moment a bison calf had its life saved from a pack of wolves. In video posted Thursday to his Instagram account, Michael Sypniewski was filming at ...

Montana is known for its rugged mountain ranges, abundant wildlife, and wide-open landscapes — but one destination stands out ...